CN104075608B - Aluminum fin material - Google Patents
Aluminum fin material Download PDFInfo
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- CN104075608B CN104075608B CN201410049884.XA CN201410049884A CN104075608B CN 104075608 B CN104075608 B CN 104075608B CN 201410049884 A CN201410049884 A CN 201410049884A CN 104075608 B CN104075608 B CN 104075608B
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Abstract
The present invention provides a kind of aluminum fin material, the Polyethylene Glycol etc. of the low molecular carboxylic acid of the reason material i.e. formic acid etc. that its ant nest shape that decomposition can either be generated as copper pipe corrodes is applied to hydrophilic film, simultaneously not only when the manufacture of heat exchanger, and it also is able to suppress the generation of low molecular carboxylic acid as air conditioner when using.The aluminum fin material (10) of the present invention, it is characterized in that, possesses the substrate (1) being made up of aluminum, with be formed at surface, hydrophilic film (4) containing compound with Oxyranyle as construction unit, hydrophilic film (4) shows alkaline alkali metal or the compound of alkaline-earth metal possibly together with when hydrolysis, so that the pH extracting water from this hydrophilic film (4) reaches more than 5.
Description
Technical field
The present invention relates to the aluminum fin material for heat exchanger that the indoor set etc. of air conditioner is used.
Background technology
Heat exchanger is by as room air conditioner, packaged air conditioner, refrigerated display case, refrigerator, oil cooler and radiator
Etc. being used in various field.Heat exchanger such as makes the copper pipe (referring to the pipe being made up of copper or copper alloy) of medium passing
Run through the fin of tabular and constitute.In the fin of heat exchanger, in general, from heat conductivity and the angle of excellent in workability
Set out and be suitable for aluminum or aluminum alloy (following, to be generically and collectively referred to as aluminum).
In a heat exchanger, if dew during air-cooling system operating accumulates between fin, then resistance during air-supply is become
Resist and make heat exchanger performance reduce.Therefore, the fin being made up of such aluminum is in addition to corrosion resistance, in order to also give it
Hydrophilic or repellency, so that fin surface will not accumulate dew, and to the sheet material before the shaping of fin (hereinafter referred to as wing
Sheet material) surface of implementing film etc. processes.That is, select as follows according to the purposes etc. of heat exchanger: making fin surface is parent
Aqueous, improves the mobility of dew, or is repellency and makes the water droplet of dew just fall not becoming big when.
Such as in the heat exchanger that the indoor set of the air conditioner of room air conditioner etc. is carried, comparing dew becomes and easily disperses
Repellency, is more suitable for the hydrophilic side that water uniformly spreads at fin surface.Polyethylene Glycol etc. with Oxyranyle for knot
The compound of structure unit is as giving one of hydrophilic class coating material, because also having the effect giving surface lubrication, so
It is widely used.
Here, class coating material is applied to, as on the aluminium sheet of substrate, carry out toasting and shape with temperature corresponding with material
Become., the compound with Oxyranyle as construction unit is at high temperature decomposed and is generated the low of formic acid and acetic acid etc.
Carboxylic acids, in a heat exchanger, low molecular carboxylic acid makes the copper pipe generation ant nest shape with fin contacts corrode, and this is external flows out to
Also have during drain pan and the such problem of hair check occurs.It is thus possible, for instance in patent documentation 1, disclose a kind of aluminum fin material, its
It is provided with the hydrophilic film that with the addition of thermal decomposition inhibitor, even if the baking being allowed to the high temperature when film is formed also will not
Generate low molecular carboxylic acid.
[prior art literature]
[patent documentation]
2011 No. 208813 publications of [patent documentation 1] Japanese Unexamined Patent Publication
In a heat exchanger, under the use environment of the indoor etc. as air conditioner, have as VOC (Volatile
Organic Compounds: VOC) formaldehyde etc. be attached to fin surface and aoxidize, thus generate formic acid
Deng the situation of low molecular carboxylic acid, for such occurring source, the patent documentation 1 of described prior art is invalid.
Summary of the invention
The present invention completes in view of described problem points, and its problem is to provide the aluminum fin material of a kind of heat exchanger, purpose
It is both possess the hydrophilic of the compound applying the Polyethylene Glycol etc. with Oxyranyle as construction unit at fin surface
Film, suppresses again the ant nest shape corrosion of the copper pipe of heat exchanger, not only when the manufacture of heat exchanger, even if as air conditioner
Use time attachment formaldehyde etc., it is also possible to the corrosion of suppression copper pipe.
In order to solve described problem, the thought that the present inventors reach is, controls the pH value on the surface of aluminum fin material and makes
Low molecular carboxylic acid is neutralized, if study with keen determination it was found that pH reaches more than 5, then copper pipe ant nest shape corrosion pressed down
System.
The i.e. aluminum fin material of the present invention, possesses the substrate being made up of aluminum or aluminum alloy, and be formed at surface, containing with ring
Oxirane group is the hydrophilic film of the compound of construction unit.And, aluminum fin material is characterized in that, described hydrophilic is coated with
Film, shows alkaline alkali metal or the compound of alkaline-earth metal possibly together with when hydrolysis, so that carrying from this hydrophilic film
The pH of water intaking reaches more than 5.
So, show the compound of alkalescence when hydrophilic film is by being added on hydrolysis, thus the pH value on surface is controlled
System, though thus low molecular carboxylic acid formaldehyde etc. to be attached to surface oxidized and generate, or also can be neutralized as VOC attachment, because of
The ant nest shape corrosion of this copper pipe is inhibited.
It addition, the preferred described hydrophilic film of aluminum fin material is possibly together with thermal decomposition inhibitor.
So, containing thermal decomposition inhibitor by hydrophilic film, thus baking and aluminum fin material when being formed are added
Under high-temperature process when work becomes fin etc., the generation of low molecular carboxylic acid is suppressed.
It addition, the aluminum fin material of the present invention, the preferably surface at described substrate are also equipped with hydrophobicity film.
So, it is formed with hydrophobicity film at substrate surface, thus improves the corrosion resistance of substrate (aluminum).
It addition, the aluminum fin material of the present invention, it is also possible to possess the midparent aqueous that composition is different from described hydrophilic film
Film, at this moment, is formed with described hydrophilic film on described middle hydrophilic film.
So, by possessing middle hydrophilic film and hydrophilic is compensated, it is possible to make the hydrophilic film of most surface,
The film being mainly used in giving lubricity is become by the compound with Oxyranyle as construction unit.
Aluminum fin material according to the present invention, it is possible to form a kind of heat exchanger, it possesses on surface and applies with epoxy second
Alkyl is the hydrophilic film of the compound of construction unit, simultaneously the most not only when the manufacture of this aluminum fin material and the group of heat exchanger
High-temperature process during dress, and be no matter when as the use of air conditioner, or the low molecular carboxylic acid of formaldehyde or formic acid etc. is attached
, the corrosion of copper pipe can be prevented.
Accompanying drawing explanation
Fig. 1 is the profile of the structure of the aluminum fin material that the present invention is described, (a), (b), (c), (d) are the enforcement of the present invention
The schematic diagram of mode.
[symbol description]
10 aluminum fin materials
1 substrate
2 hydrophobicity films
3 middle hydrophilic films
4 hydrophilic films
Detailed description of the invention
[aluminum fin material]
Hereinafter, the mode with regard to the aluminum fin material for realizing the present invention illustrates.
Aluminum fin material is to be configured to the sheet material before fin, and the size cutting into regulation is shaped by mold pressing, manufactures
Become aluminum fin.As shown in Fig. 1 (a), the aluminum fin material 10 of the present invention possesses substrate 1 and is formed at its two sides and is coated to
The hydrophilic film 4 of most surface.Hereinafter, about aluminum fin material and substrate, the face that will be formed with hydrophilic film is only called surface.
(substrate)
The aluminum or aluminum alloy (following, to be generically and collectively referred to as aluminum) that substrate 1 is applied by the fin material of common heat exchanger is formed,
From the viewpoint of heat conductivity and processability, 1000 aluminum that are of JIS H4000 regulation are preferably used, more preferably use alloy to compile
The aluminum of numbers 1200.These materials are manufactured into the sheet material of expectation thickness with casting, hot rolling, the known method such as cold rolling, quenched.Substrate
The thickness of 1 does not has special provision, as long as meet the specification etc. of manufactured heat exchanger, can make and required heat conduction
Property and the corresponding thickness such as intensity and corrosion resistance, the sheet material of thickness of slab 0.06～about 0.3mm is preferably used specifically.
Substrate 1, preferably by conversion processing, is formed with conversion processing film (omitting diagram) on surface.The base being made up of aluminum
Plate 1 is endowed corrosion resistance by conversion processing film, and improves with the adhesion of hydrophilic film 4.Conversion processing film
Constituted as inorganic oxide or the organic-inorganic composite compound of inorganic matter by containing chromium (Cr), zirconium (Zr) or titanium (Ti), logical
Cross and substrate is carried out conversion processing and is formed.As long as conversion processing film gives the film of corrosion resistance, then composition to substrate 1
Be not particularly limited with thickness etc., meet application target etc. and suitably set, but the adhesion amount of unit are with metal (Cr,
Zr, Ti) conversion preferably 1～100mg/m2Scope, thickness is preferably 1～100nm.
The inorganic oxide film that conversion processing film is applied, is to implement the process of chromium phosphate hydrochlorate, phosphoric acid for substrate
Zirconium processes, zirconium oxide processes, chromic acid chromium hydrochlorate processes (Network ロ system acid Network ロ メ mono-ト reason), zinc phosphate processes or phosphoric acid metatitanic acid
Process such conversion processing and be formed at surface.It addition, organic-inorganic composite compound film is by being coated with substrate
Cloth type chromate processes or application type zirconium processes and formed, and can enumerate acrylic acid-zirconium complex etc..Preferably forming these turns
Before change processes film, with alkalescence degreaser, the surface of substrate being carried out defat in advance, thus the reactive of conversion processing is improved,
And then the adhesion of the conversion processing film formed improves.
(hydrophilic film)
In the aluminum fin material 10 of the present invention, hydrophilic film 4 is containing hydrophilic resin, and is to give parent to its surface
The film of aqueous, or in water slowly dissolution and mainly give the film of lubricity.In aluminum fin material 10, hydrophilic film 4
Preferably it is calculated as 0.01～3g/m with the adhesion amount of unit are2Mode is formed, if the ratio of the resin by this hydrophilic film 4 of formation
Attention is about 1, then the scope of preferred thickness average out to 0.01～3 μm.If hydrophilic film 4 is the thinnest, then can not get sufficiently
Hydrophilic or lubricity, on the other hand, if blocked up, then painting work when being formed reduces, and particularly substrate 1 is the aluminum of web-like
During plate (web), the formation of film becomes difficulty.It addition, in aluminum fin material 10, if the hydrophilic film 4 being mainly made up of resin is relatively
Thickness, then the efficiency of heat exchange reduces, and therefore preferred hydrophilic film 4 can obtain in the range of sufficient hydrophilic and lubricity
Relatively thinly form.
As hydrophilic resin material, can be listed below: Polyethylene Glycol (PEG, PEO), polyvinyl alcohol (PVA), polypropylene
Acid (PAA), carboxymethyl cellulose (CMC), sulfoethyl acrylate (sulfoethyl acrylate) etc., additionally it is possible to should
Copolymer with the copolymer of two or more monomers, such as acrylic acid and sulfoethyl acrylate.In addition the aluminum wing of the present invention
The hydrophilic film 4 of sheet material 10 is containing the compound (-[CH with Oxyranyle as construction unit2-CH2-O]n-) as hydrophilic
Property resin material.As such compound (following, to claim the compound containing EO base), specifically, except described poly-second two
Beyond the poly alkylene glycol (polyalkylene glycol) of alcohol etc., also can enumerate: alkyl ether
(polyalkylene glycol alkyl ether), poly alkylene glycol aryl ether (polyalkylene glycol aryl
Or polyoxyalkylene alkyl (polyoxyalkylene alkyl ether) (AE) or its acetate, sulfate ether),
(AES) etc..Because the compound containing EO base gives hydrophilic and gives lubricity, so the aluminum fin material 10 of the present invention can root
According to required characteristic, can only using the compound containing EO base as hydrophilic resin material, it is also possible to mix the hydrophilic of other
One or more of property resin material, are applied to hydrophilic film 4.Especially for the surface imparting to aluminum fin material 10
Lubricity, containing compound 1 mass % containing EO base, (with the mass ratio of hydrophilic film 4, (solid becomes preferred hydrophilic film 4
Point conversion) be calculated as 1%, lower with) more than.
In the aluminum fin material 10 of the present invention, hydrophilic film 4 in addition to hydrophilic and lubricity are provided, this hydrophilic
The compound containing EO base contained by film 4 thermally decomposes, or attachment formaldehyde etc. oxygen when as the use of heat exchanger
Change, thus the effect that the low molecular carboxylic acid with formic acid and the acetic acid etc. that make generation neutralizes.To this end, hydrophilic film 4 its prepare
Mode is, shows the compound of alkalescence possibly together with hydrolysis, and making the pH extracting water from this hydrophilic film 4 is more than 5.By
This, aluminum fin material 10 is as the fin of heat exchanger, even if having formaldehyde and low molecular carboxylic acid in surface attachment under using environment
Also being neutralized, therefore copper pipe is difficult to corrode.
As the compound of such display alkalescence, alkali metal or the hydroxide of alkaline-earth metal, carbonate, carbon can be enumerated
Acid hydrogen salt, phosphate.Alkali metal, alkaline-earth metal have Na, K, Li, Ca, Ba, Mg etc., and these compounds (following, it is referred to as alkali metal
Compound), such as there is sodium bicarbonate (NaHCO3), sodium phosphate (Na3PO4), calcium carbonate (CaCO3), lithium carbonate (Li2CO3), hydrogen
Barium monoxide (Ba (OH)2), magnesium hydroxide (Mg (OH)2).These alkali metal compounds occur hydrolysis to demonstrate alkalescence.Parent
In aqueous film 4, the neutralization salt so using the weak acid with cushioning effect is the most effective.It addition, hydrophilic film 4 can also
Mix two or more alkali metal compounds and add.Further, the amine compound of ammonia etc. also has neutralization, but for copper
The undesirable condition of stress corrosion cracking (SCC) can occur for pipe, be therefore not preferred to use in fin material.
In hydrophilic film 4, as long as alkali metal compound makes the content that pH is more than 5 of extraction water, along with greatly
Amount is added, it is possible to controls pH in high level, thus improves neutralization, and the effect of suppression Copper Tube Corrosion improves.On the other hand, parent
If alkali metal compound is added by superfluous in aqueous film 4, then hygroscopicity increases, and makes moldability reduce, therefore, although
Also depending on according to the processing conditions of aluminum fin material 10, but the content of alkali metal compound is with unit are in aluminum fin material 10
Attachment gauge, preferably 1g/m2Below.Further, about the upper limit of the adhesion amount of this alkali metal compound, have at aluminum fin material 10
During standby middle hydrophilic film 3 (with reference to Fig. 1 (b)) described later, it is controlled with the total with middle hydrophilic film 3.
About the addition of the alkali metal compound of actual hydrophilic film 4, prepare the most as follows: from
Cutting test film on aluminum fin material 10, water is extracted in sampling so that it is pH value is more than 5.In detail, will be formed on two sides hydrophilic
The aluminum fin material 10 of property film 4 is cut into 10cm × 10cm (surface area 200cm of hydrophilic film 42) as test film, to this examination
After testing the heat treated of 160 DEG C × 10 minutes that heat degreasing process that sheet is implemented to assume to have carried out heat exchanger, at 25 DEG C
Ion exchange water 50ml impregnates 10 minutes, it is possible to using the supernatant 30ml of this ion exchange water as extracting water.Extract water
The upper limit of pH value is not particularly limited, but according to the alkali metal compound added, it is possible to rise to pH and reach about 12.This extraction
The pH value of water, at hydrophilic film 4 containing time beyond following thermal decomposition inhibitor etc., hydrophilic resin and alkali metal compound
Too.
In a heat exchanger, the described neutralization of the hydrophilic film 4 of the aluminum fin material 10 of the present invention, especially at wing
The position that sheet contacts with copper pipe manifests.In this most extremely difficult entrance of position dew, though the alkali metal in hydrophilic film 4
Compound denier, because dew is also a small amount of, so the concentration of the alkali metal compound of dissolution uprises, thus ensuring that be prone to
Maintaining pH is the environment of more than 5, it is possible to demonstrate sufficient neutralization chronically.
Hydrophilic film 4 can also be containing thermal decomposition inhibitor (with reference to patent documentation 1), the particularly compound containing EO base
Content when being more than 75 mass %, preferably comprise thermal decomposition inhibitor.Hydrophilic film 4 thermally decomposes inhibitor by containing,
In high-temperature process when baking when being formed and aluminum fin material 10 are processed to fin etc., the compound containing EO base is difficult to occur
Decomposing, the generation of low molecular carboxylic acid is inhibited.If additionally, the content containing the compound of EO base of hydrophilic film 4 exceedes
99.9 mass %, then the compound containing EO base is susceptible to thermal decomposition, and therefore low molecular carboxylic acid generates in a large number, at heat exchanger
In, easily make copper pipe generation ant nest shape corrode, and then there is a possibility that drain pan generation hair check, therefore particularly preferably containing heat point
Solve inhibitor.Thermal decomposition inhibitor can be listed below: diphenyl list thioether (diphenyl monosulfide) and diphenyl two
The sulfur system of thioether (diphenyl disulfide) etc.；BHT (dibenzylatiooluene: dibutyl hydroxy toluene)
Etc. the phenol system with phenol skeleton；Or carbonohydrazides (carbazide) compound, it is also possible to add it two or more.It is coated with at hydrophilic
In film 4, in order to make its effect abundant, thermal decomposition inhibitor preferably makes content be more than 0.1 mass %.On the other hand, thermal decomposition
If inhibitor adds superfluously, then the hydrophilic of hydrophilic film 4 reduces, and the most preferably making content is below 25 mass %.
As shown in Fig. 1 (b), the aluminum fin material 10 of the present invention is as the substrate of hydrophilic film 4, it is also possible to be also equipped with by not
The hydrophilic film (middle hydrophilic film 3) that constitutes of composition, in other words, it is simply that can make hydrophilic film is double-deck structure
Make.About aluminum fin material 10, so the middle hydrophilic film 3 different from hydrophilic film 4 is set to substrate, makes tax
The lubricity of the hydrophilic film 4 giving most surface is becomed privileged, and utilizes middle hydrophilic film 3 also can give hydrophilic fully
Property.
(middle hydrophilic film)
In the aluminum fin material 10 shown in Fig. 1 (b), middle hydrophilic film 3 can apply above-mentioned hydrophilic film 4
Hydrophilic resin material.Middle hydrophilic film 3, it is also possible to containing the compound containing EO base, in this case, this external might as well
Hinder and thermal decomposition inhibitor under hydrophilic degree, can also be added, it addition, as hydrophilic film 4, it is also possible to add alkali gold
Belong to compound.It addition, the thickness of middle hydrophilic film 3 and the adhesion amount of unit are, although with aforesaid hydrophilic resin 4
In the range of standard, but preferably to be calculated as below 5 μm with the total of hydrophilic resin 4, i.e. bilayer in the efficiency of heat exchange.This
Outward, when aluminum fin material 10 possesses middle hydrophilic film 3, in order to make its effect (hydrophilic) hold on the surface of this aluminum fin material 10
Easily manifest, make the thickness of the hydrophilic film 4 of most surface relatively thinly form the most within the above range.
Additionally, as shown in Fig. 1 (c), (d), the aluminum fin material 10 of the present invention is on substrate 1 surface, i.e. at substrate 1 with hydrophilic
Property film 4 between when possessing middle hydrophilic film 3, between substrate 1 and middle hydrophilic film 3, be preferably provided with by hydrophobic
Property resin constitute hydrophobicity film 2.The substrate 1 being made up of aluminum, is not only formed with conversion processing film, but also with hydrophobic
Property film 2 is coated to its surface, and thus its corrosion resistance of aluminum fin material 10 improves further.
(hydrophobicity film)
Hydrophobicity film 2 is to give corrosion resistance and substrate coated 1 table to being made up of substrate 1 (aluminum fin material 10) aluminum
The film being made up of hydrophobic resin in face, as hydrophilic film 4, by being formed coatings in substrate surface.
The hydrophobic resin that coating is used include, for example the various resins of Polyester, polyolefin, epoxy, polyurethane series, can
Application is mixed with one or more resin.About hydrophobicity film 2, thickness etc. is not particularly limited, but in order to give
Substrate 1 is with sufficient corrosion resistance, with the attachment gauge of unit are, preferably 0.01g/m2Above, more preferably 0.05g/m2
Above.On the other hand, as hydrophilic film 4, if the hydrophobicity film 2 being made up of resin is thicker, then the efficiency of heat exchange
Reduce, be therefore preferably 8g/m with attachment gauge2Hereinafter, more preferably 4g/m2Below.Thickness is preferably 0.1～3 μm.
(manufacture method of aluminum fin material)
The aluminum fin material 10 of the present invention can manufacture as follows: on the surface of the substrate 1 through conversion processing, coating
Form the coating of hydrophilic film 4, be allowed to dry (carrying out baking process) by natural drying or hot blast etc..Additionally, formed
Before hydrophilic film 4, middle hydrophilic film 3 can also be formed equally, or can also be hydrophobic in the coating of the surface of substrate 1
Property cold coating and form hydrophobicity film 2.Further, aluminum fin material 10, when being provided with middle hydrophilic film 3, is preferably being formed
After this middle hydrophilic film 3 (carrying out baking process), its surface is washed, forms the hydrophilic of most surface the most again
Film 4 (coating coating).When arranging the middle such hydrophilic bottom film of hydrophilic film 3, by washing in advance
Remove the water soluble ingredient of bottom film, in whole coating (upper り) application, be easily formed uniformly application face, it addition, be coated with eventually
The adhesion of coating film (hydrophilic film 4) improves.Additionally, under the baking of middle hydrophilic film 3, occur thermal decomposition to give birth to
In the case of one-tenth low molecular organic acids etc., removed the most effective as water soluble ingredient.
Hydrophilic film 4, or middle hydrophilic film 3, hydrophobicity film 2, prepare this film of formation
Coating, and utilize and scrape coating and print roll coating method etc. is coated coating object (substrate 1), implements baking process and shape
Become.Particularly when substrate 1 is the aluminium sheet of web-like, then application coating device etc. carry out continuously defat, application, heating,
Windings etc., this is preferred in productivity ratio.
Each self-forming hydrophilic film 4, the coating of middle hydrophilic film 3, be not limited solely to each above-mentioned resin etc.
Composition, in order to improve coating and operability etc. and Physical properties of coating film etc., it is also possible to add various water solvents and coating adds
Add thing, such as can also independent or compound hydrous water solubleness organic solvent, cross-linking agent, surfactant, surface conditioner, moistening
Dispersant, sagging inhibitor, antioxidant, defoamer, antirust agent, antibacterial, the various solvent of antifungus agent etc. and additive.
[embodiment]
Above, just it is used for implementing mode of the present invention and is set forth, but will confirm that the enforcement of the effect of the present invention below
Example, is compared with the comparative example of the important document being unsatisfactory for the present invention and specifically describes.Further, the present invention is not limited by this embodiment
Fixed.
(making of material to be tested)
(substrate, conversion processing)
As the substrate of the material to be tested of aluminum fin material, the JIS H4000A1200 aluminium sheet of applied thickness 0.10mm.With alkali
Property medicament (Surfcleaner (サ mono-Off Network リ mono-Na one) (registered trade mark) EC370, Japan Paint society system) for this substrate
Surface carries out defat, as conversion treating solution, uses Japan Paint society R Surf (ア Le サ mono-Off) (registered trade mark)
401KB-2/45KB, implements chromium phosphate hydrochlorate and processes and form conversion processing film.With Wavelength dispersion type fluorescent X-ray device
The Cr scaled value of the conversion processing film that (Shimadzu Seisakusho Ltd.'s system, LAB CENTER XRF-1800) measures is 20mg/m2, thickness
About 20nm.
On the respective two sides of described substrate, the kind as shown in table 1 and combination form hydrophobicity film, midparent aqueous is coated with
Film, hydrophilic film, make the material to be tested of the aluminum fin material shown in Fig. 1 (a)～(d).Do not possesses hydrophobicity film, midparent
The material to be tested of aqueous film, represents with "-" in each hurdle of table 1.
(formation of hydrophobicity film)
Cold coating below acceptable diluent in the way of solid component concentration is 10%, is coated on substrate with scraping coating machine
On, arriving temperature about 220 DEG C with hot-air drying stove with substrate and toast, air cooling, the hydrophobicity defining thickness about 1 μm is coated with
Film.
(hydrophobic resin)
Polyurethane series: polyurethane-modified resin emulsion, east chemistry society of nation system, Hitec (registered trade mark)
S-6254 epoxy: water system epoxy resin, heat-curing type, anion system, Asahi Denka Co., Ltd.'s system,
Adekaresin (ア デ カ レ ヅ ソ) (registered trade mark) EM series EM-0434AN
Acrylic acid series: acrylate copolymer, Nihon Junyaku Co., Ltd.'s system, Jurymer (ヅ ユ リ マ mono-) (registration
Trade mark) AT-210
(formation of middle hydrophilic film)
By the cold coating of the kind shown in table 1, in the way of the solid component concentration added up to is 10%, as shown in table 1
Formula mixed, acceptable diluent, by thus obtained material as the formation of hydrophobic resin, with scrape coating machine coating
On substrate, arrive temperature about 220 DEG C with hot-air drying stove with substrate and toast, wash cooling and remove dissolution
Point, form the middle hydrophilic film of thickness about 0.5 μm.
(formation of hydrophilic film)
As the cold coating of hydrophilic film, prepare hydrophilic resin aqueous solution as follows.First, by poly-third
Olefin(e) acid sodium and sodium carboxymethyl cellulose, equivalent solid constituent amount aqueous solution (each solid component concentration is 10%) as basic group
Become, add the mode that the compound containing EO base of the kind shown in table 1 reaches 1% in terms of solid component concentration to described water
In solution.In this aqueous solution, add the kind shown in table 1 and the alkali metal chemical combination of the solid component concentration in described aqueous solution
Thing.Additionally, about the material to be tested of the kind describing thermal decomposition inhibitor in table 1, by the thermal decomposition inhibitor of this kind,
In the way of the content in hydrophilic film is 0.5 mass %, add in hydrophilic resin aqueous solution.
By the hydrophilic resin aqueous solution prepared as the formation of hydrophobic resin etc., it is coated on base scraping coating machine
On plate, arriving temperature 200 DEG C with hot-air drying stove with substrate and toast, air cooling, the hydrophilic forming thickness about 0.5 μm is coated with
Film, makes material to be tested.
Hydrophilic film and middle the hydrophilic resin material of hydrophilic film, the chemical combination containing EO base of hydrophilic film
Thing, thermal decomposition inhibitor use following material respectively.
(hydrophilic resin)
Sodium polyacrylate (PAANa): Toagosei Co., Ltd's system, ARON A-20L (registered trade mark)
Sodium carboxymethyl cellulose (CMCNa): first industrial pharmaceutical Co., Ltd. system, Cellogen7A (registered trade mark)
Acrylic acid/sulfonic acid system monomer copolymer salt (AASF): Nippon Shokubai Co., Ltd's system, AQUALIC (registered trade mark)
GL
Polyethylene Glycol (PEG): Sanyo Chemical Industries, Ltd.'s system, PEG-6000S (registered trade mark)
(containing the compound of EO base)
Polyethylene Glycol (PEG): Sanyo Chemical Industries, Ltd.'s system, PEG-6000S (registered trade mark)
Polyoxyethylene alkyl ether (polyoxyethylene alkyl ether) (AE): emulsifying agent Co., Ltd. of Japan system,
Newcol NT-12 (registered trade mark)
Polyoxyalkylene ether sulfuric acid (polyoxyalkylene ether sulfuric acid ester salt)
(AES): Lion Co., Ltd. system, Sunnol (registered trade mark) PP-2030
(thermal decomposition inhibitor)
Carbazide compounds: Ming Cheng chemical industry Co., Ltd. system, MS-3000 (registered trade mark)
Phenol system compound: dibenzylatiooluene (dibutyl hydroxyl toluene), Northeast chemistry
Co., Ltd.'s system
(from the pH value extracting water of hydrophilic film)
Material to be tested is cut into 10cm × 10cm as test film, this test film is set heat exchanger and adds thermal debinding
Operation and implement the heat treated of 10 minutes with 160 DEG C.By the test film through heat treated, it is immersed in the ion exchange of 25 DEG C
In water 50ml 10 minutes, using supernatant 30ml as extracting water.Measuring the pH of this extraction water, display is in Table 1.
(evaluation)
For the material to be tested made, what the evaluation hydrophilic on surface, corrosion resistance and the ant nest shape for copper corroded presses down
Effect processed.
(hydrophilic)
As hydrophilic index, measure the water contact angle under room temperature.Implement with 160 DEG C of heating materials to be tested 10 minutes
After being equivalent to add the heat treatment of thermal debinding, impregnate 24 hours in ion exchange water, be dried at room temperature for.Level loads this confession examination
Material, makes evaluation face up, and at the pure water of surface dropping about 0.5 μ L, measures contact angle with goniometer.Contact angle is below 50 °
Qualified for hydrophilic, it is excellent below 20 °, represents with " ◎ ", be good more than 20 °, below 50 °, represent with "○", aobvious
Show in Table 1.Contact angle more than 50 ° for defective, show in Table 1 with "×".
(corrosion resistance)
Corrosion resistance, carries out the salt spraytest according to JIS Z2371 after 480 hours, according to the corrosion of material to be tested
Degree be evaluated.Using the sodium-chloride water solution of 5 mass %, spray environment temperature as spray liquid is 35 DEG C, spray amount
With area 80cm2Be calculated as every 1 hour 1.5 milliliters.By making the ranking method of the degree quantification of corrosion enter according to corroded area rate
Line number value, grade is more than 9.0 for qualified, and more than 9.5 be excellent, represents with " ◎ ", more than 9.0, be well less than 9.5,
Representing with "○", display is in Table 1.It addition, be defective less than 9.0, representing with "×", display is in Table 1.
(for copper ant nest shape corrode inhibition)
In order to evaluate the inhibition that the ant nest shape for copper corrodes, use the pH value extracting water from hydrophilic film
Measurement used in, dipping material to be tested ion exchange water (extraction water).In described extraction water, impregnate φ
9.52mm, wall thickness 0.23mm, the phosphorous deoxidize copper tube (smooth pipe O material) of long 100mm, will house these container again other 1
In the sealing container of liter capacity, keeping 20 days under room temperature (20 DEG C).Thereafter, observe the cross section, liquid-gas boundary portion of copper pipe, pass through
Through hole for defective, represent with "×", be not reaching to through hole for qualified, represent with "○", display in Table 1.
[table 1]
As shown in table 1, about material to be tested No.1～11 of embodiments of the invention, the hydrophilic film of most surface, lead to
Crossing the interpolation of alkali metal compound, the pH value extracting water is adjusted to more than 5, in addition material to be tested No.5,6,10 because being added with
Thermal decomposition inhibitor, so in addition to original hydrophilic, additionally it is possible to obtain the suppression effect that the ant nest shape of copper pipe is corroded
Really.Further, about material to be tested No.5, although the addition of alkali metal compound (sodium bicarbonate) is fewer, but owing to adding
Carbazide compounds as thermal decomposition inhibitor and pH value has risen, therefore meet the scope of the present invention.In addition for examination
In material No.6～8,10,11, owing to arranging middle hydrophilic film, thus demonstrate hydrophilic excellent especially.It addition,
Substrate surface possesses in material to be tested No.9～11 of hydrophobicity film, and corrosion resistance is the most excellent.
In contrast, few as hydrophilic film not alkali metal-containing compound or content, the pH value extracting water is less than the ratio of 5
Material to be tested No.12 of relatively example～22, although hydrophilic and corrosion resistance are good, but respective extraction water causes copper pipe to pass through
Through hole, the effect of the ant nest shape corrosion of suppression copper pipe is insufficient.
Claims (5)
1. an aluminum fin material, it is characterised in that it possesses the substrate being made up of aluminum or aluminum alloy；Be formed at surface, contain
There is the hydrophilic film of compound with Oxyranyle as construction unit,
Described hydrophilic film demonstrates alkaline alkali metal or the compound of alkaline-earth metal, so that getting possibly together with when hydrolysis
More than 5 are reached from the pH extracting water of this hydrophilic film.
Aluminum fin material the most according to claim 1, it is characterised in that described hydrophilic film is possibly together with thermal decomposition suppression
Agent.
3. according to the aluminum fin material described in claim 1 or claim 2, it is characterised in that also have on the surface of described substrate
Standby hydrophobicity film.
4. according to the aluminum fin material described in claim 1 or claim 2, it is characterised in that be also equipped with composition hydrophilic with described
The middle hydrophilic film that property film is different, forms described hydrophilic film on described middle hydrophilic film.
Aluminum fin material the most according to claim 3, it is characterised in that be also equipped with composition different from described hydrophilic film
Middle hydrophilic film, forms described hydrophilic film on described middle hydrophilic film.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013-074415 | 2013-03-29 | ||
| JP2013074415A JP6300341B2 (en) | 2013-03-29 | 2013-03-29 | Aluminum fin material |
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| CN104075608A CN104075608A (en) | 2014-10-01 |
| CN104075608B true CN104075608B (en) | 2017-01-04 |
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| JP (1) | JP6300341B2 (en) |
| CN (1) | CN104075608B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783575A (en) * | 2016-05-17 | 2016-07-20 | 李国胜 | Heat exchanging piece and indoor temperature adjusting system |
| JP6747488B2 (en) * | 2018-10-29 | 2020-08-26 | ダイキン工業株式会社 | Heat exchanger fin manufacturing method |
| JP7110542B2 (en) * | 2018-11-05 | 2022-08-02 | 株式会社石垣 | Screen for solid-liquid separator |
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| JP2004043632A (en) * | 2002-07-11 | 2004-02-12 | Mitsubishi Alum Co Ltd | Coating composition for fin, fin and heat exchanger |
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| JPH0818004B2 (en) * | 1987-07-20 | 1996-02-28 | 日本パ−カライジング株式会社 | Method for hydrophilic treatment of aluminum surface |
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| JP3227618B2 (en) * | 1992-07-24 | 2001-11-12 | 昭和電工株式会社 | Manufacturing method of pre-coated fin material for heat exchanger |
| JPH06264001A (en) * | 1993-03-11 | 1994-09-20 | Nippon Light Metal Co Ltd | Method of surface treatment for imparting hydrophilicity to aluminum material |
| JP2000262968A (en) * | 1999-03-15 | 2000-09-26 | Kobe Steel Ltd | Surface treated fin material |
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| JP5794512B2 (en) * | 2009-11-30 | 2015-10-14 | 日本ペイント・サーフケミカルズ株式会社 | Corrosion-resistant treatment method for aluminum heat exchanger |
| JP5566835B2 (en) * | 2010-09-30 | 2014-08-06 | 株式会社神戸製鋼所 | Coating composition and aluminum fin material using the same |
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| CN1049715A (en) * | 1989-08-24 | 1991-03-06 | 昭和铝株式会社 | The aluminium heat exchanging material that is used for heat exchanger |
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| JP2004043632A (en) * | 2002-07-11 | 2004-02-12 | Mitsubishi Alum Co Ltd | Coating composition for fin, fin and heat exchanger |
| CN101831195A (en) * | 2009-03-09 | 2010-09-15 | 株式会社神户制钢所 | Aluminum thermal fin material |
| CN102200409A (en) * | 2010-03-26 | 2011-09-28 | 株式会社神户制钢所 | Aluminum fin material for heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014199152A (en) | 2014-10-23 |
| JP6300341B2 (en) | 2018-03-28 |
| CN104075608A (en) | 2014-10-01 |
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